Dragy 0-54mph, Mantis 10 pro, 96v with modded stock controller

Very cool, what did you do to get that time? I also have the Pro 10 Mantis, I run about 5.05 seconds to 30mph with my draggy on a good day and i only weigh 140lbs.
 
Originally I was going to leave it stock but at 160km a rear MOSFET blew up. Luckily I bought it locally and Eevee's warrantied the controller no problem. Controller #2 developed a different problem shortly after install, so I bought a new one out of pocket and decided to see what this thing can really do. I modded the shunts by soldering part way on one side and installed it.

The MOSFET part number didn't come up anywhere so I used a few MOSFETs from a good board to fix up the original blown controller and am looking for a good upgrade. I'm planning to test the avalanche voltage of the stockers, maybe they're 80v like the capacitors.
https://endless-sphere.com/forums/viewtopic.php?f=30&t=117318

I'm ~180lbs on the road.
 
Thats funny you say that because i was thinking about doing the same thing. I got my Mantis from Aliexpress for under 2k shipped, and we all know your service is out the window if something breaks on the scooter.... turns out i had a bad controller that would intermittently cut out after it warmed up a bit., Purchased a new one out of pocket so its fine now but just for sh1ts and gigs, i may do the shunt mod on that bad controler to see if it'll make a noticeable difference.

Im keeping my eye on that new Mantis king Gt since that model will have new sinewave's with the dual 30 amps. If anything, a TFT display swap with those controllers would be a solid upgrade to my current pro, and faster because the Mantis king weighs almost 10lbs more lol

I was also looking at the Wolf X controllers because those also have the dual 30amp controllers with very similar wiring.

I am somewhat inexperienced when it comes to the technical side of these things so hopefully i don't totally screw things up trying to go for more power!
 
The stock MOSFETs are not very good and I would try replacing them on your bad controller to see if that fixes things. If it doesn't, you could try reflowing the boards. Controller power wires are only 14ga, so either upgrade those, or run a second wire. On the negative side you have to run to the shunt, but a second positive wire can attach to the other side of the bus.

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I built a plug in harness that allows a series boost pack and tried a 1S add on built from old FPV lipo cells.


Screenshot_20220822-024459_Gallery.jpg

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Results were a best 60ft, best 0-30mph and on a separate run unfortunately, best 1/8th mile ET and MPH.
 
[youtube]-OwJsCeJKas[/youtube]


https://youtu.be/-OwJsCeJKas



Now on 23s after changing out the stock 80v caps for 100v, 135c caps.

Motor brake rotor holes drilled for Statorade.
 

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Id be tempted to swap them controllers out to something you can tweak the current on thats how you will get fast off the line.

The voltage been so high may increase the top speed beyond its torque capabilities lowering efficency, id be tempted to run it at 20s but with more amps so the tyres are screeching.

Im not invested in this product other than ive bought one, the flipsky 75200 alu would get the job done plus 2 controllers can be paired by canbus to control them as one they can have traction control and with a gyro and accelerometer anti wheelie too as well as loads of display options from basic Wh calc and speed to gps tracking with camera overlay of your ride.

Good effort so far mind its a beast.
 
Wow, amazing work. I would love more power from my mantis but I'm not sure where to start. I have some lipo batteries on hand from my rc hobby but would it even be worth running a 3 or 4s lipo inline with everything else stock? It would be easier than pulling the controller apart and changing capacitors and what not lol that all sounds a little more technical than I'm comfortable with at the moment! I was eyeing up the new mantis king GT with the new 30amp X2 controllers. I want those or I was also looking at the wolf warrior x sinewave controllers those are also 30 amp X2 and look VERY similar just swap the display and throttle maybe and that's probably just about it.. but that would only be a marginal gain
 
3s packs in series with the stock battery for 79.8v fully charged will work with no other changes. Highly recommended and wakes up the mid and top end nicely.

I've just started testing 24s on the stock controller (with 100v caps installed of course) and will update results here.

20221007_194854.jpg
 
I am tempted to run a couple 3s in parallel for inline to my main battery but i have a few things that are bothering me.

Lack of internal space would make me seek external locations
3S battery would require a different charger or disconnecting and charging both the main battery AND lipo's.
I would need like two 15,000mah lipo's which would cost about 300$ OR get a 12v 24.5ah Lithium ion battery online for a bit less
Added stress on electronics, especially controller running more voltage.
Volatage cut off is still made for a 60v battery when running higher voltage, which causes issues.
How do you balance charge these cells every time, the oddball 12V system wouldnt be exactly 24.5ah like the LG cell pack


It makes me come back around to think, why not just increase amperage? Its more difficult but safer and more realistic. Run the same 60V battery but get higher amperage controllers from 27amp X2 to somewhere between 50 - 100amps X2. Its possible to find 2 controllers that fit within the deck putting out that amperage.

The Mantis King GT is out and the controllers will be available very soon im told from an Aliexpress seller.
Basic math is telling me that my mantis is at 3,240 watts (60v X 54 total amps)
if i run a 12V series which is a huge PITA itll net me 3,888 Watts
Or Mantis king GT controllers on stock 60v = 3,600 watts.

The Mantis king GT controllers would be a better route because not only would i have more power than stock, it would fit in the internal space and have better efficiency and throttle control with the sinewave halled controllers.

I really wish there was an upgraded controller on the market for the stock 60v battery because i would rather run parallel for added range if needed, than mess with increasing voltage to get the power.

EDIT: Look up the Dualtron 50a X2 60v controllers, its meant for the minimotors display and it has basically all the same options as our scooter. Headlight, horn, blinkers, dual/single mode, tail lights etc. I think it almost be a plug and play with a few simple changes.... they wouldn't fit inside the mantis but one of them might then you'd stick the second one outside of the deck somewhere
 
The stock motors are low kV so you can get more low end torque by raising the amps, but you will not get any significant increase in top speed.

Charging and balancing is no big deal. I have a few chargers, but mainly using:
https://ebikes.ca/product-info/grin-products/cycle-satiator.html
https://www.getfpv.com/toolkitrc-m8s-400w-18a-charger-cell-checker-servo-tester-signal-tester.html

I'm waiting for more info on the Mantis King GT parts and if they take well to mods I want to build a 24S MKGT that will outrun my old ebikes 100km/h top speed.
 
Lowell said:
The stock motors are low kV so you can get more low end torque by raising the amps, but you will not get any significant increase in top speed.

Charging and balancing is no big deal. I have a few chargers, but mainly using:
https://ebikes.ca/product-info/grin-products/cycle-satiator.html
https://www.getfpv.com/toolkitrc-m8s-400w-18a-charger-cell-checker-servo-tester-signal-tester.html

I'm waiting for more info on the Mantis King GT parts and if they take well to mods I want to build a 24S MKGT that will outrun my old ebikes 100km/h top speed.

I guess i should have stated im not interested in gaining more top speed, so amps are my main concern. However, more amps will increase the top speed at least a few mph because of the power increase. The Mantis King GT does 43mph on flat ground vs the 37 ish of the old Mantis and they have the same motors.
 
https://youtu.be/JV6GaRv8IIY?t=63

https://youtu.be/X1gdUKtEHd8?t=389

Two different testers GPS verified 45 and 46mph top speeds which is very cool.

Going from 38mph to 45mph requires 50% more power just based on aero drag. That can't be explained by the 10% power boost, so the MKGT must be using higher kV motors. The M10P is not limited by controller current when it gets to it's stock top speed, it's the motor back EMF that kills the fun.

Andrew quotes 0-30 in 7.35s, 0-40 in 16.98s which are terrible numbers. The VSETT 10+ according to ESG recorded 5.3 and 10.3 for the same speed increments. (ESG uses a 165lb rider, but I don't believe this will change the numbers by whole seconds)

https://electric-scooter.guide/comparisons/compare-electric-scooters/
 
Lowell said:
https://youtu.be/JV6GaRv8IIY?t=63

https://youtu.be/X1gdUKtEHd8?t=389

Two different testers GPS verified 45 and 46mph top speeds which is very cool.

Going from 38mph to 45mph requires 50% more power just based on aero drag. That can't be explained by the 10% power boost, so the MKGT must be using higher kV motors. The M10P is not limited by controller current when it gets to it's stock top speed, it's the motor back EMF that kills the fun.

Andrew quotes 0-30 in 7.35s, 0-40 in 16.98s which are terrible numbers. The VSETT 10+ according to ESG recorded 5.3 and 10.3 for the same speed increments. (ESG uses a 165lb rider, but I don't believe this will change the numbers by whole seconds)

https://electric-scooter.guide/comparisons/compare-electric-scooters/

I have the Mantis Pro "V2" with the "upgraded" motors which are identical to the Mantis King GT, im not sure which ones you have but the top speed alone, is due to the controllers and that's about it. The controllers are also halled sinewaves so that could be part of it as well im not sure.

I agree though, voltage = Top speed and Amps = acceleration to put it in simplest form.

Correct me if im wrong, when you lift the Scooter off the ground and let those motors spin freely, thats your absolute top speed and max RPMs from the motor with that voltage. Stock voltage (60v) shoul give you 50+mph, its been a while since i did that though so dont quote me on it. The more amps, the more likely you will hit that max RPM speed. You do not necessarily need more voltage to utilize that extra top end. Those higher amp controllers just free up that extra top end but ultimately, do not increase the RPM of the motor, thats where voltage comes into play.

I almost forgot to mention, the kaabo mantis King GT uses 21700 not the 18650's.... so that could be a reason why its kicking out more power?

How much top speed do you think i would gain from a 12V series battery on the stock 60v system? im considering it for sh1ts and gigs. Mine currently goes about 39-40 on flat ground (im 140lbs)

These are the motors i have on mine below:

https://www.aliexpress.us/item/2255799967721627.html?spm=a2g0o.detail.0.0.92126d6dKsZFq5&gps-id=pcDetailBottomMoreThisSeller&scm=1007.13339.291025.0&scm_id=1007.13339.291025.0&scm-url=1007.13339.291025.0&pvid=6b4f2329-e17a-4036-ac14-4cce6093478e&_t=gps-id%3ApcDetailBottomMoreThisSeller%2Cscm-url%3A1007.13339.291025.0%2Cpvid%3A6b4f2329-e17a-4036-ac14-4cce6093478e%2Ctpp_buckets%3A668%232846%238112%231997&pdp_ext_f=%7B%22sku_id%22%3A%2210000000478242970%22%2C%22sceneId%22%3A%223339%22%7D&pdp_npi=2%40dis%21USD%21225.0%21225.0%21%21%21%21%21%402101f6b116655355014451579e161b%2110000000478242970%21rec&gatewayAdapt=glo2usa&_randl_shipto=US
 
Not trying to thread jack but since i posted my story in these comments....

Update to my "build" with Mantis King GT guts in my mantis 10 pro. New controllers, throttle, display and hub board.

I was able to achieve a 5.0 second 0 to 30 on a good day, best run ever and today I've been doing back to back consistent 4.0-4.1 seconds to 30mph. It feels really torquey below 30mph, feels like a rocket now. Top end went from 40mph GPS to 42+ so nothing crazy because I just added amps and more efficient sinewave sensors.

I weigh 135lbs or so, Rider Guide scooter reviewers could achieve a 5.8 second pass with a 165lbs rider on test runs for reference. Very happy with the increased performance but it wasn't cheap i must say, and not worth it to the average Joe
 

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Hi. I have mantis pro V1 with minimotors 27Ax2 controller and still 60V battery. Is it worth to do shunt mod on it? I was thinking to reflow lines from MOSFET to make them thicker and do the shunt mod. It supposed to pull 35A max per controller. I was also thinking to add the additional battery to increase Voltage
 
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